Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543.
Chem Commun (Camb). 2014 Jan 14;50(4):451-3. doi: 10.1039/c3cc47816e.
Two polymorphic forms of a ladder coordination polymer [Zn2(μ-O2C-p-Tol)2(O2C-p-Tol)2(bpe)2] have parallel and criss-cross alignments of the C=C bond pairs. Both polymorphs undergo 100% [2+2] cycloaddition reaction but the one with a parallel orientation of C=C bonds (thermodynamic product) retains its single crystallinity after the reaction.
两种梯型配位聚合物[Zn2(μ-O2C-p-Tol)2(O2C-p-Tol)2(bpe)2]的聚合物具有平行和交错的 C=C 键对排列。两种聚合物都经历了 100%的[2+2]环加成反应，但具有平行 C=C 键取向的聚合物（热力学产物）在反应后仍然保持其单晶性。
